The Speed of Light in Glass

The video explains how light behaves when it passes through different materials, such as glass or water, and why it appears to slow down. It covers both wave and particle perspectives of light. As a wave, light's speed changes due to the medium, but its frequency remains constant. As a particle, light interacts with molecules, causing apparent slowing. The analogy of a president moving through a crowded room illustrates this concept.

What new insight or understanding did you gain from this video?